LIGHT-DUTY, EXPANDABLE LAND ANCHOR (30,000-POUND CLASS).
Final rept. Jun 64-Dec 65,
NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF
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The study developed a family of two-fluke, light-duty, expandable land anchors that have ultimate vertical holding strengths of 30,000 to 60,000 pounds in sand and clay soils. It also includes a method of installation for these anchors that reduces excavation of the boring of either a 3- or 6-inch-diameter hole. The anchors when closed form a nominal 3- or 6-inch circular cylinder. After installation, two flukes are opened by the soil action to hold the anchor in the soil. One hundred and fifty-six field tests were conducted to evaluate the anchor design, vertical and horizontal holding strength, structural strength, opening characteristics, fluke length, overburden depth, and installation equipment and techniques. Recommendations on the use of these expandable anchors are included. Author
- Structural Engineering and Building Technology